双凝胶聚合物电解质由两种聚合物的高分子链段相互交织缠绕，形成了复杂的无规则致密“网”，可以牢牢地将正极材料束缚在正极侧，阻碍多硫离子向锂负极侧扩散，有效地抑制了“飞梭效应”，而且有望在高温锂硫电池中发挥其用武之地，实现锂硫电池在宽温度范围的应用。为了探究1,3-二氧戊环（DOL）和聚乙烯醇-β-氰乙基醚（PVA-CN）两种单体分子在实际的电池中的凝胶化机制，本毕业设计尝试用介电谱方法来实时监测DOL和PVA-CN两种单体在纽扣电池中，0-80 ℃变温过程中的分步聚合过程，其特异的时间和温度依存的介电性质被观察到了。利用H-N公式拟合介电数据获得了介电参数（各个弛豫的弛豫强度和弛豫时间）的温度和时间依赖关系。通过分析，得出了体系的两个凝胶点温度，其中DOL在25 ℃时发生聚合，PVA-CN在60 ℃时发生聚合，还构建出各个聚合过程中体系内部的结构模型，最终证明了介电谱方法在凝胶聚合物电解质结构探究中适用性的初步结论。

The double-gel polymer electrolyte is intertwined and intertwined by the polymer segments of the two polymers, forming a complex random and dense "network", which can firmly bind the positive electrode material to the positive electrode side and prevent polysulfide ions from entering the lithium negative electrode. The lateral diffusion effectively inhibits the "flying shuttle effect", and is expected to play its role in high-temperature lithium-sulfur batteries, realizing the application of lithium-sulfur batteries in a wide temperature range. In order to explore the gelation mechanism of two monomer molecules, 1,3-dioxolane (DOL) and polyvinyl alcohol-β-cyanoethyl ether (PVA-CN) in practical batteries, this graduation project attempts to use Dielectric spectroscopy method was used to monitor the step-by-step polymerization process of DOL and PVA-CN monomers in coin cells in a 0-80 °C variable temperature process in real time, and specific time- and temperature-dependent dielectric properties were observed. The temperature and time dependence of the dielectric parameters (relaxation intensity and relaxation time for each relaxation) was obtained by fitting the dielectric data with the H-N formula. Through analysis, two gel point temperatures of the system were obtained, in which DOL was polymerized at 25 °C, and PVA-CN was polymerized at 60 °C. The internal structure model of the system during each polymerization process was also constructed, and the dielectric spectrum was finally proved. Preliminary conclusions on the applicability of the method in the exploration of the structure of gel polymer electrolytes.